Answer: The moles of NaOH are 0.25 moles.
Step-by-step explanation:
To calculate the number of moles, we use the following formula:
![\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}](https://img.qammunity.org/2020/formulas/chemistry/high-school/gwh5prgbdt4s2p8o8xquycz897bwt6lvw1.png)
Calculations for the moles of NaOH:
Given mass of NaOH = 10 g
Molar mass of NaOH = 40 g/mol
Putting values in above equation, we get:
![\text{Number of moles}=(10g)/(40g/mol)=0.25moles](https://img.qammunity.org/2020/formulas/chemistry/middle-school/kvz1ortw3r8l0uhrgzetks5xcvzx2s7ul6.png)
Hence, the moles of NaOH are 0.25 moles.